Aircraft



FIG. 1 is a perspective view showing the front, top and left side of an aircraft which forms my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a rear elevational view thereof.

The broken lines in the drawings depict portions of the aircraft that form no part of the claimed design. 

CLAIM The ornamental design for an aircraft, as shown and described. 